PMID- 15153465 OWN - NLM STAT- MEDLINE DCOM- 20040806 LR - 20190516 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 172 IP - 11 DP - 2004 Jun 1 TI - Cutting edge: hemokinin has substance P-like function and expression in inflammation. PG - 6528-32 AB - Substance P (SP) belongs to the tachykinin family of molecules. SP, cleaved from preprotachykinin A, is a neuropeptide and a proinflammatory leukocyte product. SP engages neurokinin 1 receptor (NK-1R) to stimulate cells. Hemokinin (HK) is another tachykinin that binds NK-1R. HK comes from preprotachykinin C, which is distinct from preprotachykinin A. We determined whether HK functions like SP at inflammatory sites. Preprotachykinin C mRNA was in murine schistosome granulomas and intestinal lamina propria mononuclear cells. Granuloma T cells and macrophages expressed preprotachykinin C mRNA. HK bound granuloma T cell NK-1R with high affinity. SP and HK stimulated IFN-gamma production with equal potency. NK-1R antagonist blocked the effect of SP and HK on IFN-gamma secretion. Thus, both HK and SP are expressed at sites of chronic inflammation and share cell origin, receptor, and immunoregulatory function. Two distinct but functionally overlapping tachykinins govern inflammation through NK-1R at sites of chronic inflammation. FAU - Metwali, Ahmed AU - Metwali A AD - Department of Internal Medicine, Division of Gastroenterology-Hepatology, University of Iowa, Iowa City, IA 52242, USA. FAU - Blum, Arthur M AU - Blum AM FAU - Elliott, David E AU - Elliott DE FAU - Setiawan, Tommy AU - Setiawan T FAU - Weinstock, Joel V AU - Weinstock JV LA - eng GR - DK07663/DK/NIDDK NIH HHS/United States GR - DK25295/DK/NIDDK NIH HHS/United States GR - DK38327/DK/NIDDK NIH HHS/United States GR - DK58755/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Protein Precursors) RN - 0 (Receptors, Neurokinin-1) RN - 0 (Tac4 protein, mouse) RN - 0 (Tachykinins) RN - 0 (preprotachykinin) RN - 33507-63-0 (Substance P) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Animals MH - Cell Line MH - Inflammation/*metabolism MH - Interferon-gamma/biosynthesis MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred CBA MH - Protein Precursors/genetics/*physiology MH - Receptors, Neurokinin-1/metabolism MH - Substance P/*physiology MH - Tachykinins/genetics/*physiology EDAT- 2004/05/22 05:00 MHDA- 2004/08/07 05:00 CRDT- 2004/05/22 05:00 PHST- 2004/05/22 05:00 [pubmed] PHST- 2004/08/07 05:00 [medline] PHST- 2004/05/22 05:00 [entrez] AID - 10.4049/jimmunol.172.11.6528 [doi] PST - ppublish SO - J Immunol. 2004 Jun 1;172(11):6528-32. doi: 10.4049/jimmunol.172.11.6528.